HealthPreflightSystem logBackupUsersSettings

Server

Settings

What holds for the whole instance, whoever is signed in. Your own name, e-mail and password are under Account.

01

Log retention

The main driver of /data growth. Does not affect mail.log rotation (fourteen daily files).

The inbound log also never holds more than 10 000 rows: refused mail is logged at the rate strangers knock on port 25.

02

Notifications

From postmaster@mail.example.org, to every user who has an e-mail and has not turned them off under Account.

03

Notification mail

The server's own name · checked 3 min ago

DKIM

publishedNot a secret · selector sp2026Show valuesHide values

SPF

missingFor the server's own name, not for your domains

Notifications are sent without it, and a receiver may file them as spam.

04

Sending rate limits

Read-only
Level 1 · per client IP
600 / h
Set in .env; restart to change. Nothing below may exceed it.
Level 2 · domain, application
Set on each domain and application.